OLTELTECH Sławomir Olejniczak

61.10.Z - Wired telecommunications activities

33.20.Z - Installation of industrial machinery and equipment and outfit

41.20.Z - Building works related to erection of residential and non-residential buildings

42.22.Z - Works related to construction of telecommunications and electricity lines

43.11.Z - Demolition

43.12.Z - Site preparation

43.21.Z - Electrical installation

43.22.Z - Plumbing, heat and air-conditioning installation

43.29.Z - Other construction installation

61.20.Z - Wireless telecommunications activities, excluding satellite telecommunications activities

61.90.Z - Other telecommunications activities

62.01.Z - Computer programming activities

62.02.Z - Computer consultancy activities

62.03.Z - Computer facilities management activities

62.09.Z - Other information technology and computer service activities

63.11.Z - Data processing, hosting and related activities

63.12.Z - Web portals

63.91.Z - News agency activities

63.99.Z - Other information service activities not elsewhere classified

84.25.Z - Fire service activities